分类名称中间显示echarts 饼配置项内容和展示

通过鼠标划入划出，对应种类名称中间切换显示

      var option = {
					tooltip: {
						trigger: 'item',
						formatter: "{a} <br/>{b}: {c} ({d}%)"
					},
					legend: {
						orient: 'vertical',
						x: 'left',
						data: ['直接访问', '邮件营销', '联盟广告', '视频广告', '搜索引擎']
					},
					series: [{
						name: '访问来源',
						type: 'pie',
						radius: ['50%', '70%'],
						avoidLabelOverlap: false,

						labelLine: {
							normal: {
								show: false
							}
						},
						data: [{
								value: 335,
								label: {
									normal: {
										show: true,
										position: 'center',
										textStyle: {
											fontSize: '30',
											fontWeight: 'bold'
										}
									},
									
								},
								name: '直接访问'
							},
							{
								value: 310,
								label: {
									normal: {
										show: false,
										position: 'center',
										textStyle: {
											fontSize: '30',
											fontWeight: 'bold'
										}
									}
								},
								name: '邮件营销'
							},
							{
								value: 234,
								label: {
									normal: {
										show: false,
										position: 'center',
										textStyle: {
											fontSize: '30',
											fontWeight: 'bold'
										}
									}
								},
								name: '联盟广告'
							},
							{
								value: 135,
								label: {
									normal: {
										show: false,
										position: 'center',
										textStyle: {
											fontSize: '30',
											fontWeight: 'bold'
										}
									}
								},
								name: '视频广告'
							},
							{
								value: 1548,
								label: {
									normal: {
										show: false,
										position: 'center',
										textStyle: {
											fontSize: '30',
											fontWeight: 'bold'
										}
									}
								},
								name: '搜索引擎'
							}
						]
					}]
				};
				myChart.setOption(option)
				myChart.on('mouseover', 'series', function(params) {
					for(var i=0;i<option.series[0].data.length;i++){
						option.series[0].data[i].label.normal.show = false;
					}
					option.series[0].data[params.dataIndex].label.normal.show = true;
					console.log(option)
					this.setOption(option)
					
				});